DE102005034287A1 - Device for welding thermoplastic material - Google Patents

Device for welding thermoplastic material Download PDF

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Publication number
DE102005034287A1
DE102005034287A1 DE200510034287 DE102005034287A DE102005034287A1 DE 102005034287 A1 DE102005034287 A1 DE 102005034287A1 DE 200510034287 DE200510034287 DE 200510034287 DE 102005034287 A DE102005034287 A DE 102005034287A DE 102005034287 A1 DE102005034287 A1 DE 102005034287A1
Authority
DE
Germany
Prior art keywords
sealing
insert
sealing surface
jaw
cross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE200510034287
Other languages
German (de)
Inventor
Alexander Epp
Walter Dr. Baur
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rovema Verpackungsmaschinen GmbH and Co KG
Rovema GmbH
Original Assignee
Rovema Verpackungsmaschinen GmbH and Co KG
Rovema GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rovema Verpackungsmaschinen GmbH and Co KG, Rovema GmbH filed Critical Rovema Verpackungsmaschinen GmbH and Co KG
Priority to DE200510034287 priority Critical patent/DE102005034287A1/en
Priority to PL06014996T priority patent/PL1745915T3/en
Priority to EP20060014996 priority patent/EP1745915B9/en
Priority to ES06014996.0T priority patent/ES2473327T3/en
Publication of DE102005034287A1 publication Critical patent/DE102005034287A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B51/00—Devices for, or methods of, sealing or securing package folds or closures; Devices for gathering or twisting wrappers, or necks of bags
    • B65B51/10—Applying or generating heat or pressure or combinations thereof
    • B65B51/26—Devices specially adapted for producing transverse or longitudinal seams in webs or tubes
    • B65B51/30—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes
    • B65B51/303—Devices, e.g. jaws, for applying pressure and heat, e.g. for subdividing filled tubes reciprocating along only one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/24—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools characterised by the means for heating the tool
    • B29C65/30—Electrical means
    • B29C65/305—Electrical means involving the use of cartridge heaters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
    • B29C65/745—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area using a single unit having both a severing tool and a welding tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/004—Preventing sticking together, e.g. of some areas of the parts to be joined
    • B29C66/0042—Preventing sticking together, e.g. of some areas of the parts to be joined of the joining tool and the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B29C66/1122—Single lap to lap joints, i.e. overlap joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/431—Joining the articles to themselves
    • B29C66/4312—Joining the articles to themselves for making flat seams in tubular or hollow articles, e.g. transversal seams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or hollow articles
    • B29C66/43—Joining a relatively small portion of the surface of said articles
    • B29C66/432—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms
    • B29C66/4322—Joining a relatively small portion of the surface of said articles for making tubular articles or closed loops, e.g. by joining several sheets ; for making hollow articles or hollow preforms by joining a single sheet to itself
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/49—Internally supporting the, e.g. tubular, article during joining
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/816—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the mounting of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8167—Quick change joining tools or surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/849—Packaging machines
    • B29C66/8491—Packaging machines welding through a filled container, e.g. tube or bag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/22—Heated wire resistive ribbon, resistive band or resistive strip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/23—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations
    • B29C66/232—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being multiple and parallel or being in the form of tessellations said joint lines being multiple and parallel, i.e. the joint being formed by several parallel joint lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/812—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B29C66/8122—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the composition, by the structure, by the intensive physical properties or by the optical properties of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps characterised by the composition of the material constituting the pressing elements, e.g. constituting the welding jaws or clamps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
    • B29C66/81417—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled being V-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/851—Bag or container making machines
    • B29C66/8511—Bag making machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/10—Polymers of propylene
    • B29K2023/12—PP, i.e. polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2009/00—Layered products

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Package Closures (AREA)

Abstract

Eine Vorrichtung, die zum Verschweißen von thermoplastischem Kunststoff, insbesondere einer Folienbahn (14), vorgesehen ist, weist einen Backenkörper (1), mindestens eine Siegelfläche (5) am Backenkörper (1) und eine Heizeinrichtung (6) zum Erwärmen der Siegelfläche (5) auf, um einen in Wärmekontakt mit der Siegelfläche (5) befindlichen Kunststoff aufschmelzen und verschweißen zu können. Ein Einsatz (10) ist in den Backenkörper (1) eingesetzt. Am Einsatz (10) ist die Siegelfläche (5) in einer Siegelposition ausgerichtet. Um ohne einen Austausch des Backenkörpers (1) eine andere Siegelfläche (8), die z. B. anders beschichtet ist, nutzen zu können, wird vorgeschlagen, dass am Einsatz (10) mindestens eine weitere Siegelfläche (8) vorgesehen ist, welche durch Wenden des Einsatzes (10) in die Siegelposition bringbar ist.A device which is provided for welding thermoplastic material, in particular a film web (14), has a cheek body (1), at least one sealing surface (5) on the cheek body (1) and a heating device (6) for heating the sealing surface (5 ) in order to be able to melt and weld a plastic in thermal contact with the sealing surface (5). An insert (10) is inserted into the jaw body (1). At the insert (10) the sealing surface (5) is aligned in a sealing position. To another without exchange of the jaw body (1) another sealing surface (8), the z. B. is different, use, it is proposed that at least one further sealing surface (8) is provided on the insert (10), which by turning the insert (10) can be brought into the sealing position.

Description

Der Anmeldegegenstand betrifft den Verpackungsmaschinenbau und dort eine Vorrichtung zum Verschweißen von thermoplastischem Kunststoff, insbesondere einer Folienbahn, welche einen derartigen; schweißfähigen Kunststoff aufweist.Of the The subject of the application relates to packaging machine construction and there a device for welding of thermoplastic material, in particular a film web, which one such; weldable plastic having.

Um eine Folienbahn zum Zwecke einer Erzeugung von Beuteln zu verschweißen, ist es bekannt, die Folienbahn umzuformen und mittels gegeneinander bewegbarer Backenkörper oder mittels eines einzigen, gegen einen Widerstand wirkenden Backenkörpers zu verschweißen. Derartige Backenkörper werden bei vertikalen und horizontalen Schlauchbeutelmaschinen zur Beutelerzeugung oder zum Anschweißen einer neuen Folienbahn an eine nahezu aufgebrauchte Folienbahn (sogenannter Splicer) eingesetzt.Around To weld a film web for the purpose of creating bags is it is known to reshape the film web and by means of against each other movable cheek body or by means of a single jaw body acting against a resistance weld. Such cheeks body are used in vertical and horizontal tubular bag machines Bag production or for welding a new film web used to a nearly exhausted film web (so-called splicer).

Die bekannten Vorrichtungen weisen einen Backenkörper auf, mindestens eine Siegelfläche am Backenkörper und eine Heizeinrichtung zum Erwärmen der Siegelfläche bzw. der Siegelflächen, um den in Wärmekontakt mit der Siegelfläche befindlichen Kunststoff aufschmelzen und verschweißen zu können. Des weiteren ist aus der DE 100 05 020 A1 ein beheizbarer Einsatz zum Einsetzen in den Backenkörper bekannt, wobei am Einsatz die Siegelfläche in einer Siegelposition vorgesehen ist. Die Verschweißung des Kunststoffes wird hierbei durch den erwärmten Einsatz ausgeführt, wenn der Backenkörper gegen den Kunststoff gesetzt ist.The known devices have a jaw body, at least one sealing surface on the jaw body and a heating device for heating the sealing surface or the sealing surfaces in order to be able to melt and weld the plastic in thermal contact with the sealing surface. Furthermore, from the DE 100 05 020 A1 a heatable insert known for insertion into the jaw body, wherein the insert surface is provided in a sealing position on the insert. The welding of the plastic is carried out here by the heated insert when the jaw body is set against the plastic.

Die bekannte Vorrichtung hat den Nachteil, dass sie komplett ausgetauscht werden muss, wenn die Siegelfläche nicht mehr genutzt werden soll, z. B. weil eine anders ausgeführte Folienbahn eingesetzt werden soll, die eine spezielle Siegelflächenbeschichtung erfordert, oder wenn eine Beschichtung einer Siegelfläche abgenutzt ist, und wiederum eine beschichtete Siegelfläche benötigt wird.The known device has the disadvantage that they are completely replaced must be, if the sealing surface should no longer be used, for. B. because a different running film web should be used, which is a special sealing surface coating requires, or if a coating worn on a sealing surface is, and in turn a coated sealing surface is needed.

Es liegt die Aufgabe zugrunde, eine Vorrichtung gemäß dem Oberbegriff des Anspruchs 1 derart weiterzubilden, dass eine andere Siegelfläche ohne Austausch der Vorrichtung genutzt werden kann.It the object is based, a device according to the preamble of the claim 1 such that another sealing surface without exchange the device can be used.

Gelöst ist die Aufgabe gemäß dem kennzeichnenden Teil des Anspruchs 1. Danach ist am Einsatz mindestens eine weitere Siegelfläche vorgesehen, welche durch Wenden des Einsatzes in die Siegelposition bringbar ist.Solved is the Task according to the characterizing Part of claim 1. Thereafter, at least one more is on the insert sealing surface provided, which by turning the insert in the sealing position can be brought.

Die vorgeschlagene Vorrichtung hat den Vorteil dass eine andere Siegelfläche vorgesehen werden kann, indem der Einsatz gewendet wird. Dabei gelangt eine weitere Siegelfläche in die Siegelposition und kann zum Verschweißen einer Kunststoffbahn genutzt werden. Ein Austausch der kompletten Vorrichtung ist nicht nötig. Das Wenden kann auf unterschiedliche Art und Weise erfolgen. So kann ein in den Backenkörper lediglich eingesteckter Einsatz aus diesem entnommen, um einen bestimmten Winkel gedreht und dann wieder eingesetzt werden. Oder der Einsatz ist um eine Achse drehbar und in jeweils einer bestimmten Winkelposition fixierbar. In jedem Fall stehen mindestens zwei Siegelflächen des Einsatzes zur Verfügung.The proposed device has the advantage that another sealing surface provided can be done by turning the insert. This gets a additional sealing surface in the sealing position and can be used for welding a plastic sheet become. An exchange of the complete device is not necessary. The Reversing can be done in different ways. So can one in the cheek body only inserted insert taken from this to a specific Angle turned and then reinstated. Or the use is rotatable about an axis and in each case a certain angular position fixable. In any case, there are at least two sealing surfaces of the insert to disposal.

Weitere, vorteilhafte Ausgestaltungen der vorgeschlagenen Neuerung sind in den Ansprüchen 2 bis 10 beschrieben.Further, advantageous embodiments of the proposed innovation are in to the claims 2 to 10 described.

Hat der Einsatz einen rechteckigen Querschnitt (Anspruch 2), so können zwei, drei oder vier Siegelflächen am Einsatz genutzt werden. Dabei können unterschiedlich hohe Siegelflächen vorgesehen werden, um unterschiedliche Schweißnähte zu erreichen. Oder der Querschnitt ist quadratisch (Anspruch 3), so dass bis zu vier gleiche Siegelflächen ausgebildet werden können, welche nach jeweils einer 90 Grad-Wendung des Einsatzes nacheinander nutzbar sind. Aber auch ein dreieckiger oder ein sechseckiger Querschnitt (Anspruch 4) ist von Vorteil. Im ersten Fall stehen drei Siegelflächen am Einsatz zur Verfügung, welche nach jeweils einer 120 Grad-Drehung des Einsatzes in die Siegelposition gelangen. Im zweiten Fall gelangt eine andere Siegelfläche nach einer 60-Frad-Drehung in diese Position. Gerade bei dieser Ausgestaltung des Einsatzes wird eine einfache und zuverlässige, dauerhafte und neutrale Nutzung des wendbaren Einsatzes erreicht. Die Rentabilität ist am größten, wenn alle Querschnittsbegrenzungen des Einsatzes mit jeweils einer Siegelfläche versehen sind, d. h., wenn gemäß Anspruch 5 pro gerader Querschnittsbegrenzung (Begrenzung des Querschnitts des Einsatzes) eine Siegelfläche vorgesehen ist.Has the insert has a rectangular cross-section (claim 2), so two, three or four sealing surfaces be used on the insert. Different levels of sealing can be provided be used to achieve different welds. Or the Cross-section is square (claim 3), so that up to four same Sealing surfaces formed can be which can be used one after the other after a 90 degree turn of the insert are. But also a triangular or a hexagonal cross-section (Claim 4) is advantageous. In the first case there are three sealing surfaces on Use available, which after each 120 degree rotation of the insert in the Enter sealing position. In the second case, another sealing surface will follow a 60-round turn into that position. Especially in this embodiment The use of a simple and reliable, durable and neutral Use of the reversible insert achieved. The profitability is on biggest, though all cross-sectional boundaries of the insert provided with a respective sealing surface are, d. h., if according to claim 5 per straight cross section boundary (limitation of the cross section of the insert) a sealing surface is provided.

Es kommt vor, dass nach Durchführung eines Verpackungsvorganges, bei welchem eine Mehrschichtfolie (Laminatfolie) zu verschweißen war, eine Monofolie, z. B. aus Polyethylen verscheißt werden soll. Während für die Mehrschichtfolie eine unbeschichtete Siegelfläche, die eine gut Wärmeübertragung in eine äußere Kunststoffschicht, z. B. Polypropylen, erreicht, ideal ist, muss eine Monofolie, sofern eine dauerbeheizte Siegelfläche vorgesehen ist, mit einer Siegelfläche verschweißt werden, auf welcher eine Antihaftbeschichtung angebracht ist, um ein Anhaften des aufgeschmolzenen Kunststoffes an der Siegelfläche zu vermeiden. Ist gemäß Anspruch 6 eine Siegelfläche unbeschichtet, und eine weitere Siegelfläche mit einer Antihaftbeschichtung, die insbesondere Polytetraflourethylen enthält, versehen, so kann durch einfaches Wenden des Einsatzes eine Siegelfläche mit oder ohne Antihaftbeschichtung in eine Siegelposition gebracht werden, um eine Monofolie oder eine Mehrschichtfolie zu verschweißen.It happens that after carrying out a packaging process in which a multilayer film (laminate film) was to be welded, a monofilm, z. B. should be verschscheißt from polyethylene. While for the multi-layer film an uncoated sealing surface, which is a good heat transfer into an outer plastic layer, for. B. Polypropylene, is ideal, a monofilm, if a permanently heated sealing surface is provided to be welded to a sealing surface on which a non-stick coating is applied to prevent adhesion of the molten plastic to the sealing surface. Is according to claim 6, a sealing surface uncoated, and another sealing surface with a non-stick coating, which contains in particular polytetrafluoroethylene, provided Thus, by simply turning the insert, a sealing surface with or without a non-stick coating can be brought into a sealing position in order to weld a monofilm or a multilayer film.

Ist die Heizeinrichtung in den Einsatz integriert (Anspruch 7), so ist die Wärmeübertragung von der Heizeinrichtung hin zu einer der Siegelflächen besonders effektiv, da zu jeder Siegelfläche hin nur ein kurzer Weg für die Wärmeleitung vorgesehen ist. Zudem werden Wärmeübergänge an Grenzschichten zweier Materialien vermieden. Dabei kann die Heizeinrichtung als Widerstandsheizelement, z. B. in Form einer Heizpatrone ausgeführt sein. Ein äußerer Mantel der Heizeinrichtung kann dabei die Siegelflächen ausbilden. Dabei eignen sich dreieckige, rechteckige oder sechseckige Querschnitte der Heizeinrichtung zum Ausbilden von Siegelflächen.is the heater integrated into the insert (claim 7), so is the heat transfer from the heater to one of the sealing surfaces especially effectively, because of each sealed area There is only a short way to go the heat conduction is provided. In addition, heat transfer at boundary layers avoided two materials. In this case, the heater as Resistance heating element, z. B. be executed in the form of a heating cartridge. An outer coat The heater can form the sealing surfaces. Are suitable triangular, rectangular or hexagonal cross sections of the heater for forming sealing surfaces.

Ist der Einsatz in einstückiger Weise ausgeführt, und weist er zwei parallel zueinander ausgerichtete Siegelflächen in der Siegelposition auf (Anspruch 8), so eignet er sich für Quersiegelbacken einer vertikalen Schlauchbeutelmaschine. Durch Wenden des Einsatzes können zwei andere Siegelflächen in die Siegelposition gebracht werden.is the use in one piece Way, and he has two parallel aligned sealing surfaces in the sealing position on (claim 8), it is suitable for transverse sealing jaws a vertical flow wrapper. By turning the insert can two other sealing surfaces be brought into the sealing position.

Die Vorrichtung ist auch als Längssiegelbacke einer vertikalen Schlauchbeutelmaschine, als Splicer (Anspruch 9) oder als Schweißbacke einer horizontalen Beutelmaschine geeignet.The Device is also as longitudinal sealing jaw a vertical tubular bag machine, as a splicer (claim 9) or as a welding jaw a horizontal bag machine suitable.

Der Einsatz kann einstückig oder zweistückig in einer Quersiegelbacke einer vertikalen Schlauchbeutelmaschine vorgesehen werden, wobei zwischen zwei parallel zueinander ausgerichteten, in der Siegelposition befindlichen Siegelflächen eine auslenkbare Trenneinrichtung zum Durchtrennen einer Folienbahn vorgesehen ist.Of the Insert can be made in one piece or two-piece in a transverse sealing jaw of a vertical flow-wrapping machine be provided, wherein between two parallel aligned, in the sealing position sealing surfaces a deflectable separator is provided for severing a film web.

Im folgenden wird die vorgeschlagene Neuerung an Hand Ausführungsbeispiele darstellenden Figuren näher beschrieben. Es zeigt:in the Following is the proposed innovation on hand embodiments illustrative figures closer described. It shows:

1 in einer Seitenansicht eine vertikale Schlauchbeutelmaschine, die einen Splicer, eine Längssiegelbacke und Quersiegelbacken mit jeweils mindestens einem wendbaren Einsatz aufweist; 1 in a side view of a vertical bagging machine having a splicer, a longitudinal sealing jaw and transverse sealing jaws, each with at least one reversible insert;

2 in einer Schnittdarstellung die Quersiegelbacken der 1 beim Anlegen an einen Folienschlauch, wobei jeweils zwei wendbare, unbeschichtete Siegelflächen an jeweils zwei Einsätzen pro Quersiegelbacke vorgesehen sind; 2 in a sectional view of the transverse sealing jaws of 1 when applying to a film tube, wherein each two reversible, uncoated sealing surfaces are provided on two inserts per transverse sealing jaw;

3 in einer Schnittdarstellung eine Längssiegelbacke analog der in 1 dargestellten. jedoch beim Verschweißen eines aus einer Monofolie gebildeten Folienschlauches, und mit jeweils einer Antihaftbeschichtung auf zwei Siegelflächen eines wendbaren Einsatzes; 3 in a sectional view of a longitudinal sealing jaw analogous to in 1 shown. However, when welding a film tube formed from a monofilm, and each with a non-stick coating on two sealing surfaces of a reversible insert;

4 in einer Schnittdarstellung einen Splicer analog dem in 1 dargestellten, jedoch mit einer beschichteten äußeren, in einer Siegelposition befindlichen, ersten Siegelfläche und einer zweiten unbeschichteten Siegelfläche eines wendbaren Einsatzes, um wahlweise Monofolienbahnen oder Mehrschichtfolienbahnen aneinander zu schweißen; 4 in a sectional view a splicer analogous to the in 1 shown, but with a coated outer, in a sealed position, the first sealing surface and a second uncoated sealing surface of a reversible insert to selectively weld monofilm or multilayer film webs together;

5 in einer Seitenansicht die beiden Siegelflächen einer Quersiegelbacke, in welche ein wendbarer, einstückig ausgebildeter Einsatz eingesteckt ist, der zum Erzeugen jeweils einer Kopfnaht eines Schlauchbeutels und einer Bodennaht eines nachfolgenden Schlauchbeutels vorgesehen ist, sowie 5 in a side view, the two sealing surfaces of a transverse sealing jaw, in which a reversible, integrally formed insert is inserted, which is provided for generating in each case a top seam of a tubular bag and a bottom seam of a subsequent tubular bag, and

6 in einer um 90 Grad relativ zur Ansicht der 5 versetzten Seitenansicht den Einsatz der Quersiegelbacke der 5. 6 in a 90 degrees relative to the view of the 5 offset side view the use of the transverse sealing jaw the 5 ,

Bei einer vertikalen Schlauchbeutelmaschine 3 wird eine aus zwei Lagen aufgebaute Folienbahn 14 mittels eines Folienabzugs 15 von einer Vorratsrolle 16 abgerollt und über eine Formschulter 17 gezogen (1). Die Folienbahn 14 wird dabei zu einem Folienschlauch 7 umgeformt, der ein vertikal ausgerichtetes Füllrohr 20 umgibt, durch welches das untere Ende des Folienschlauches 7 befüllt werden kann. Der Folienschlauch 7 wird mittels einer gegen das Füllrohr 20 wirkenden Längssiegelbacke 18 parallel zur Folientransportrichtung 19 unter Erzeugung einer Längsnaht 4 verschweißt. Zwei gegeneinander bewegbare, den Folienschlauch 7 zwischen ihren Siegelflächen 5 einklemmende Quersiegelbacken 2 (2) dienen der Erzeugung von Quernähten 13. Jeweils zwei Quernähte 13 werden gleichzeitig erzeugt und bilden die Kopfnaht eines Schlauchbeutels 12 und die Bodennaht eines nachfolgenden Schlauchbeutels 12. Eine Trenneinrichtung 11 dient zum Abtrennen jeweils eines befüllten und verschlossenen Schlauchbeutels 12 vom Folienschlauch 7. Ein Splicer 21 ist dazu vorgesehen, nach einem Verbrauch der gesamten Vorratsrolle 16 eine neue Folienbahn 14 einer neuen Vorratsrolle 16 an das Ende der vorherigen Folienbahn 14 anzuschweißen.For a vertical bagger 3 becomes a film web made up of two layers 14 by means of a film take-off 15 from a supply roll 16 unrolled and over a form shoulder 17 drawn ( 1 ). The foil web 14 becomes a film tube 7 reshaped, which is a vertically aligned filling tube 20 surrounds, through which the lower end of the film tube 7 can be filled. The film tube 7 is by means of a against the filling tube 20 acting longitudinal sealing jaw 18 parallel to the film transport direction 19 creating a longitudinal seam 4 welded. Two mutually movable, the film tube 7 between their sealed surfaces 5 clamping cross-sealing jaws 2 ( 2 ) serve for the production of transverse seams 13 , Two transverse seams each 13 are generated simultaneously and form the top seam of a tubular bag 12 and the bottom seam of a subsequent tubular bag 12 , A separator 11 serves to separate each one filled and sealed tubular bag 12 from the film tube 7 , A splicer 21 is intended after consumption of the entire supply roll 16 a new film web 14 a new supply roll 16 at the end of the previous film web 14 to weld.

Insgesamt sind vier Vorrichtungen zum Verschweißen der Folienbahn 14 vorgesehen. Es sind der Splicer 21, die Längssiegelbacke 18 und die beiden Quersiegelbacken 2. Jede Vorrichtung zum Verschweißen weist einen Backenkörper 1 auf. Während am Splicer 21 und an der Längssiegelbacke 18 jeweils eine in einer Siegelposition befindliche Siegelfläche 5 vorgesehen ist, sind pro Quersiegelbacke 2 je zwei Siegelflächen 5 in der Siegelposition. Jede Vorrichtung zum Verschweißen ist mit mindestens einer Heizeinrichtung 6 zum Erwärmen einer Siegelfläche 5 ausgestattet um den Kunststoff der Folienbahn 14 aufschmelzen und verschweißen zu können. Jede Siegelfläche 5 befindet sich an einem Einsatz 10, der in den entsprechenden Backenkörper 1 eingesteckt ist. An jedem Einsatz 10 ist eine weitere unbeschichtete Siegelfläche 8 vorgesehen, welche durch Wenden des Einsatzes 10 um 180 Grad in die Siegelposition bringbar ist. Dabei hat jeder Einsatz 10 einen rechteckigen Querschnitt. Wäre der Einsatz 10 jeweils mit einem quadratischen Querschnitt ausgeführt, so könnten an seinen vier Querschnittsbegrenzungen 9 vier Siegelflächen 5, 8 ausgebildet sein.In total there are four devices for welding the film web 14 intended. It's the splicer 21 , the longitudinal sealing jaw 18 and the two transverse sealing jaws 2 , Each device for welding has a cheek body 1 on. While at the splicer 21 and on the longitudinal sealing jaw 18 each one in a sealing position seal surface 5 is provided, are per transverse sealing jaw 2 two sealing surfaces each 5 in the sealing position. Each device for welding is at least ei ner heating device 6 for heating a sealing surface 5 equipped with the plastic of the film web 14 melt and weld. Every sealed area 5 is at a mission 10 in the corresponding cheek body 1 is plugged in. At every use 10 is another uncoated sealing surface 8th provided by turning the insert 10 180 degrees in the sealing position can be brought. Everybody has their turn 10 a rectangular cross-section. Would be the use 10 each executed with a square cross section, so could at its four cross-sectional boundaries 9 four sealing surfaces 5 . 8th be educated.

Die weiteren Siegelflächen 8 können durch Wenden des Einsatzes 10 jeweils dann genutzt werden, wenn die zuvor genutzte Siegelfläche 5 in Folge einer festgestellten Wölbung der Siegelfläche 5, z. B. hervorgerufen durch eine mechanische Deformation, nicht mehr für einen konstanten Schweißdruck über die gesamte Siegelfläche 5 nutzbar ist.The other sealing surfaces 8th can by turning the insert 10 be used in each case if the previously used sealing surface 5 as a result of a detected curvature of the sealing surface 5 , z. B. caused by a mechanical deformation, no longer for a constant welding pressure over the entire sealing surface 5 is usable.

Beim Ausführungsbeispiel der 3 ist sowohl eine Siegelfläche 5 eines mittels einer Klemmeinrichtung 23 gehaltenen Einsatzes 10 einer Längssiegelbacke 18 als auch eine weitere Siegelfläche 8 mit einer Antihaftbeschichtung 22, die Polytetraflourethylen enthält, versehen. Insofern können beide Siegelflächen 5, 8 zum Verschweißen von Polyethylenmonofolie genutzt werden. Ist die Antihaftbeschichtung 22 der Siegelfläche 5 nach längerer Nutzungsdauer abgenutzt, so kann ohne Backenwechsel nach Lösen der Klemmeinrichtung 23 der Einsatz 10 gewendet werden, um die Siegelfläche 8, die eine unverbrauchte Antihaftbeschichtung 22 hat, in die Siegelposition zu bringen. Die Siegelfläche 8 könnte jedoch auch unbeschichtet sein, um die Längssiegelbacke 18 wahlweise für Verbundfolien zu nutzen, bei welchen keine Antihaftbeschichtung 22 notwendig ist. Zwar können Verbundfolien auch mittels Antihaftbeschichtungen 22 verschweißt werden, dies wäre jedoch unwirtschaftlich, da diese Beschichtungen stets nur eine bestimmte Nutzungsdauer haben, und eine Neubeschichtung einen zusätzlichen Aufwand mit sich bringt.In the embodiment of 3 is both a sealed area 5 one by means of a clamping device 23 held use 10 a longitudinal sealing jaw 18 as well as another seal surface 8th with a non-stick coating 22 provided with polytetrafluoroethylene. In this respect, both sealing surfaces 5 . 8th used for welding polyethylene monofilm. Is the non-stick coating 22 the sealing surface 5 worn out after a long period of use, so can without jaw change after loosening the clamping device 23 the use 10 be turned around the sealing surface 8th containing an unused non-stick coating 22 has to bring to the sealing position. The sealing surface 8th However, it could also be uncoated to the longitudinal sealing jaw 18 optional for composite films where no non-stick coating is used 22 necessary is. Although composite films can also be made using non-stick coatings 22 However, this would be uneconomical, since these coatings always have a certain useful life, and a re-coating brings with it an additional effort.

Beim Ausführungsbeispiel der 4 weist eine Siegelfläche 5 eine Antihaftbeschichtung 22 auf und eine weitere Siegelfläche 8 ist unbeschichtet, um einen Splicer 21 wahlweise für Monofolien oder Verbundfolien zu nutzen. In den Einsatz 10, der die beiden Siegelflächen 5, 8 aufweist, ist eine Heizeinrichtung 6 integriert, um durch dort fließenden Strom eine schnelle und direkte Aufwärmung der Siegelflächen 5, 8 zu erreichen.In the embodiment of 4 has a sealing surface 5 a non-stick coating 22 on and another seal surface 8th is uncoated to a splicer 21 optionally for mono films or composite films to use. In the insert 10 that the two sealed surfaces 5 . 8th has, is a heater 6 integrated, so that there is a fast and direct warming up of the sealing surfaces due to the current flowing there 5 . 8th to reach.

Beim Ausführungsbeispiel der 5 und 6 ist ein Einsatz 10 in einstückiger Weise ausgeführt. Er weist zwei parallel zueinander ausgerichtete, beschichtete Siegelflächen 5 in einer Siegelposition auf. Durch Drehung des Einsatzes 10 können zwei weitere Siegelflächen 8, die ebenfalls eine Antihaftbeschichtung 22 haben, in die Siegelposition gebracht werden, um jeweils eine als Bodennaht und eine als Kopfnaht dienende Quernaht 13 zu erzeugen.In the embodiment of 5 and 6 is an assignment 10 executed in one piece. It has two parallel sealed sealing surfaces 5 in a sealed position. By turning the insert 10 can have two more sealing surfaces 8th , which is also a non-stick coating 22 have brought into the sealing position, each serving as a bottom seam and a head seam transverse seam 13 to create.

11
BackenkörperBack body
22
QuersiegelbackeCross-sealing jaw
33
vertikale Schlauchbeutelmaschinevertical Fill and seal machine
44
Längsnahtlongitudinal seam
55
Siegelflächesealing surface
66
Heizeinrichtungheater
77
Folienschlauchfilm tube
88th
Siegelflächesealing surface
99
QuerschnittsbegrenzungCross-boundary
1010
Einsatzcommitment
1111
Trenneinrichtungseparator
1212
Schlauchbeuteltubular bag
1313
Quernahtcross seam
1414
Folienbahnsheet
1515
Folienabzugfilm take-off
1616
Vorratsrollesupply roll
1717
Formschulterforming shoulder
1818
LängssiegelbackeLongitudinal sealing jaw
1919
FolientransportrichtungFilm transport direction
2020
Füllrohrfilling pipe
2121
SplicerSplicer
2222
AntihaftbeschichtungNon-stick coating
2323
Klemmeinrichtungclamper
2424
Verbindungconnection

Claims (10)

Vorrichtung zum Verschweißen von thermoplastischem Kunststoff, insbesondere einer Folienbahn (14), welche einen derartigen Kunststoff aufweist, mit einem Backenkörper (1), mindestens einer Siegelfläche (5) am Backenkörper (1), einer Heizeinrichtung (6) zum Erwärmen der Siegelfläche (5), um einen in Wärmekontakt mit der Siegelfläche (5) befindlichen Kunststoff aufschmelzen und verschweißen zu können, sowie mit einem Einsatz (10) zum Einsetzen in den Backenkörper (1), wobei am Einsatz (10) die Siegelfläche (5) in einer Siegelposition vorgesehen ist, dadurch gekennzeichnet, dass am Einsatz (10) mindestens eine weitere Siegelfläche (8) vorgesehen ist, welche durch Wenden des Einsatzes (10) in die Siegelposition bringbar ist.Device for welding thermoplastic material, in particular a film web ( 14 ), which comprises such a plastic, with a cheek body ( 1 ), at least one sealing surface ( 5 ) on the cheek body ( 1 ), a heating device ( 6 ) for heating the sealing surface ( 5 ) in thermal contact with the sealing surface ( 5 ) can be melted and welded plastic, and with an insert ( 10 ) for insertion into the jaw body ( 1 ), whereby at the employment ( 10 ) the sealing surface ( 5 ) is provided in a sealing position, characterized in that the insert ( 10 ) at least one additional sealing surface ( 8th ) provided by turning the insert ( 10 ) can be brought into the sealing position. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Einsatz (10) einen rechteckigen Querschnitt aufweist.Device according to claim 1, characterized in that the insert ( 10 ) has a rectangular cross-section. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, dass der Querschnitt quadratisch ist.Device according to claim 2, characterized in that that the cross section is square. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Einsatz einen dreieckigen oder einen sechseckigen Querschnitt aufweist.Apparatus according to claim 1, characterized ge indicates that the insert has a triangular or a hexagonal cross-section. Vorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass pro gerader Querschnittsbegrenzung (9) eine Siegelfläche (5, 8) vorgesehen ist.Device according to one of claims 3 to 5, characterized in that per straight cross-sectional boundary ( 9 ) a sealing surface ( 5 . 8th ) is provided. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass eine Siegelfläche (5) unbeschichtet ist, und eine weitere Siegelfläche (8) mit einer Antihaftbeschichtung (22), die insbesondere Polytetraflourethylen enthält, vorgesehen ist.Device according to one of claims 1 to 5, characterized in that a sealing surface ( 5 ) is uncoated, and another sealing surface ( 8th ) with a non-stick coating ( 22 ), which in particular contains polytetrafluoroethylene, is provided. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Heizeinrichtung (6) in den Einsatz (10) integriert ist.Device according to one of claims 1 to 6, characterized in that the heating device ( 6 ) in the insert ( 10 ) is integrated. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Einsatz (10) in einstückiger Weise ausgeführt ist, und dabei zwei parallel zueinander ausgerichtete Siegelflächen (5) in der Siegelposition aufweist.Device according to one of claims 1 to 7, characterized in that the insert ( 10 ) is executed in one piece, and thereby two parallel aligned sealing surfaces ( 5 ) in the sealing position. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Vorrichtung als Längssiegelbacke (18) einer vertikalen Schlauchbeutelmaschine (3) oder als Splicer (21) ausgeführt ist.Device according to one of claims 1 to 7, characterized in that the device as a longitudinal sealing jaw ( 18 ) of a vertical bagging machine ( 3 ) or as a splicer ( 21 ) is executed. Vorrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Vorrichtung als Quersiegelbacke (2) einer vertikalen Schlauchbeutelmaschine (3) ausgeführt ist, wobei zwischen zwei parallel zueinander ausgerichteten, in der Siegelposition befindlichen Siegelflächen (5) eine auslenkbare Trenneinrichtung (11) zum Durchtrennen einer Folienbahn (14) vorgesehen ist.Device according to one of claims 1 to 8, characterized in that the device as a transverse sealing jaw ( 2 ) of a vertical bagging machine ( 3 ) is executed, wherein between two parallel aligned, located in the sealing position sealing surfaces ( 5 ) a deflectable separating device ( 11 ) for severing a film web ( 14 ) is provided.
DE200510034287 2005-07-22 2005-07-22 Device for welding thermoplastic material Withdrawn DE102005034287A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE200510034287 DE102005034287A1 (en) 2005-07-22 2005-07-22 Device for welding thermoplastic material
PL06014996T PL1745915T3 (en) 2005-07-22 2006-07-19 Device for welding thermoplastics
EP20060014996 EP1745915B9 (en) 2005-07-22 2006-07-19 Device for welding thermoplastics
ES06014996.0T ES2473327T3 (en) 2005-07-22 2006-07-19 Device for welding a thermoplastic plastic

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200510034287 DE102005034287A1 (en) 2005-07-22 2005-07-22 Device for welding thermoplastic material

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DE102005034287A1 true DE102005034287A1 (en) 2007-01-25

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DE (1) DE102005034287A1 (en)
ES (1) ES2473327T3 (en)
PL (1) PL1745915T3 (en)

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US5277745A (en) * 1991-11-27 1994-01-11 Reynolds Metals Company Sever and seal bar having interchangeable inserts and blades
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JPH01228826A (en) * 1988-03-09 1989-09-12 Taisei Houzai Kk Heat seal roll
DE9421649U1 (en) * 1993-06-03 1996-04-11 Optima Maschinenfabrik Dr. Bühler GmbH & Co., 74523 Schwäbisch Hall Welding element for foil sealing
IL132893A (en) * 1999-11-11 2004-06-20 R M D Robotics Ltd Anvil for ultrasonic cutting apparatus
DE10005020A1 (en) 2000-02-04 2001-08-09 Rovema Gmbh Thermoplastics welding equipment for production of tubular bags from plastic film has a heat sealing band on a deformable support
US20030024208A1 (en) * 2001-08-03 2003-02-06 Hwang Well Chen Sealing machine having changeable sealing members

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5277745A (en) * 1991-11-27 1994-01-11 Reynolds Metals Company Sever and seal bar having interchangeable inserts and blades
DE4318415A1 (en) * 1993-06-03 1994-12-08 Buehler Optima Maschf Welding element for foil sealing
DE19949915A1 (en) * 1999-10-16 2001-04-19 Rovema Gmbh Heat sealing bar for plastic packaging films, has an interchangeable sealing face component
DE10002020A1 (en) * 2000-01-19 2001-08-02 Schott Glas Coating of chilled devices

Also Published As

Publication number Publication date
ES2473327T9 (en) 2014-09-30
PL1745915T3 (en) 2014-09-30
EP1745915A1 (en) 2007-01-24
ES2473327T3 (en) 2014-07-04
EP1745915B9 (en) 2014-09-10
EP1745915B1 (en) 2014-05-07

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